From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756522AbXETSsy (ORCPT ); Sun, 20 May 2007 14:48:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754524AbXETSsq (ORCPT ); Sun, 20 May 2007 14:48:46 -0400 Received: from agminet01.oracle.com ([141.146.126.228]:57026 "EHLO agminet01.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751789AbXETSso (ORCPT ); Sun, 20 May 2007 14:48:44 -0400 Date: Sun, 20 May 2007 11:53:53 -0700 From: Randy Dunlap To: Robert Hancock , ide Cc: Indan Zupancic , linux-kernel , Tejun Heo Subject: Re: sd_resume redundant? [was: [PATCH] libata: implement ata_wait_after_reset()] Message-Id: <20070520115353.4428a735.randy.dunlap@oracle.com> In-Reply-To: <4650891F.80301@shaw.ca> References: <4650891F.80301@shaw.ca> Organization: Oracle Linux Eng. X-Mailer: Sylpheed 2.3.1 (GTK+ 2.8.10; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Whitelist: TRUE X-Whitelist: TRUE X-Brightmail-Tracker: AAAAAQAAAAI= Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 20 May 2007 11:45:03 -0600 Robert Hancock wrote: > Indan Zupancic wrote: > >>> Everything seems to work fine without sd_resume(), so why is it needed? > >> Because not all disks spin up without being told to do so and like it or > >> not spinning disks up on resume is the default behavior. As I wrote in > >> the other reply, it would be worthwhile to make it configurable. > > > > Not even after they receive a read command? Ugh. > > ATA disks are supposed to spin up, yes. SCSI disks require a command to > tell them to spin up if they're in the "stopped" state. Good info, but linux-ide was dropped. Is that due to lack of reply-to-all or is it a newsgroup thing or what? --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code ***